Alinco Electronics
DR610/DR150 (metal 8 pin): .... The deviation can be set to a narrow FM mode required for the new CAP services, but there are more detailed requirements on ...www.alinco.com/faq.html

The "...." means there is a lot of text between the first part of the quote and the part you are interested in--the narrow deviation feature applies to the DR-135, not the DR-150.